Alternator for Yanmar Marine 6LP Diesel Engines - 12V 80A
Alternator for Yanmar Marine 6LP Diesel Engines - 12V 80A
SKU:400-52033
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Alternator for Yanmar Marine Diesel Engines
Yanmar Marine 6LP Six-Cylinder Diesel, LY2M-STE & LYAM-STE 6 - 12V 80A
This alternator is a direct replacement for Yanmar six-cylinder marine diesel engines fitted with an alternator of this specification, including the 6LP-DT, 6LP-DTZE, 6LP-DTZE1, 6LP-DTZY, 6LP-ST and 6LP-STZE range. It is built to OEM specifications, giving the same fit, output and mounting as the original alternator it replaces, with no modification required for installation.
Rated at 12 volts with a high 80 amp output for demanding marine charging duty, this internal-regulator (IR) unit rotates clockwise (CW), matching the original equipment specification for these Yanmar marine engines.
Key Features
- 12V, 80 Amp high-output alternator
- Internal regulator (IR) design
- Clockwise (CW) rotation
- Direct OEM fit for Yanmar 6LP series marine diesel engines
- 12-month warranty as standard
Technical Specs
| Specification | Detail |
|---|---|
| Voltage | 12V |
| Amperage | 80A |
| Rotation | Clockwise (CW) |
| Regulator | Internal (IR) |
| Interchange Reference | Lester 12355 |
Vehicle Fitment Guide
Years shown are the overall coverage span for this part. Please confirm against the OEM part number on your original unit before ordering.
| Make & Model | Years |
|---|---|
| Yanmar 6LP-DT 6-Cylinder Marine Diesel | 1997 |
| Yanmar 6LP-DTZE, 6LP-DTZE1 & 6LP-DTZY 6-Cylinder Marine Diesel | 1997 |
| Yanmar 6LP-ST & 6LP-STZE 6-Cylinder Marine Diesel | 1997 |
| Yanmar Marine LY2M-STE 6 | 1994-On |
| Yanmar Marine LYAM-STE 6 | 1994-On |
| Yanmar Marine LYAM-UTE 6 | 1994-On |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number | Manufacturer / Brand |
|---|---|
| 119773-77200 | Yanmar |
| 101211-9940 | Denso |
| 400-52033, ND101211-9940 | Arrowhead |
| 20101 | API Marine |
| 4-6849 | EMP Parts |
| 12355N, 1-2458-01ND | WAI |
| 12355 | Lester |
Frequently Asked Questions
Will this alternator fit without any modification?
Yes. This is a direct OEM fit and function replacement using the same mounting and electrical connections as your original unit, so no modification is needed.
What is included?
You receive one new alternator, ready to install using your existing bracket, belt and wiring loom.
How can I tell my old alternator has failed?
Common signs include a battery warning light, dim or flickering lights, a battery that won't hold charge, or a whining or growling noise from the alternator itself.
Why is the output rated at 80 amps?
Marine diesel engines typically need a higher output alternator to keep house and starting batteries charged, so this unit is rated at 80 amps to match the original Yanmar specification.
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